The Rage Hypodermic Crossbow Broadhead 125 has a stainless steel hypodermic ferrule, weighs 125 grains, and has a two inch cutting diameter. With a stout blade thickness of 0.035, this broadhead is very strong and durable. The high energy shock collar ensures proper deployment of the blades with all crossbows. Stainless steel hypodermic ferrule Weighs 125 grains 2��� cutting diameter .035 blade thickness High energy series shock collar ensures proper deployment